The Bentley Subglacial Trench is a vast topographic

trench A trench is a type of excavation or in the ground that is generally deeper than it is wide (as opposed to a wider gully, or ditch), and narrow compared with its length (as opposed to a simple hole or pit). In geology, trenches result from ero ...

in Marie Byrd Land, West Antarctica, 80°S, 115°W. At 2,555 meters (8,382 ft) below

sea level Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardise ...

, it (along with the deepest points within the adjacent Byrd Subglacial Basin) is among the lowest points on the surface of the Earth not covered by ocean, although it is covered by ice. (See

Extremes on Earth This article lists extreme locations on Earth that hold geographical records or are otherwise known for their geophysical or meteorological superlatives. All of these locations are Earth-wide extremes; extremes of individual continents or coun ...

and

Vestfold Hills The Vestfold Hills are rounded, rocky, coastal hills, in extent, on the north side of Sorsdal Glacier on the Ingrid Christensen Coast of Princess Elizabeth Land, Antarctica. The hills are subdivided by three west-trending peninsulas bounded by n ...

). The trench was named in 1961 after

Charles R. Bentley Charles Raymond Bentley (December 23, 1929 – August 19, 2017) was an American glaciologist and geophysicist, born in Rochester, New York. He was a professor emeritus at the University of Wisconsin–Madison. Mount Bentley and the Bentley Su ...

who was the geophysicist in charge of the scientific expeditions in West Antarctica in 1957–59 that led to its discovery. Starting in 2016 some hot anomalies were detected beneath Bentley Subglacial Trench and

Mount Sidley Mount Sidley is the highest dormant volcano in Antarctica, a member of the Volcanic Seven Summits, with a summit elevation of . It is a massive, mainly snow-covered shield volcano which is the highest of the five volcanic mountains that comprise ...

volcano.AGUPublications

Notes

References

* Central Intelligence Agency, World Factbook

Retrieved October 28, 2008. * MapPlanet

Retrieved October 28, 2008. * TheSpot

Retrieved OCtober 04, 2017 * AGUPublications

Retrieved October, 04, 2017.

Notes

References

See also